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How were Earth’s continents arranged during the beginning of the Triassic Period?

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Triassic paleogeography — Triassic Period Distribution of landmasses, mountainous regions, shallow seas, and deep ocean basins during the early Triassic Period. Included in the paleogeographic reconstruction are the locations of the interval's subduction zones.

At the beginning of the Triassic Period, Earth’s continents were consolidated into one large, C-shaped supercontinent known as Pangea.12

This massive landmass covered approximately one-quarter of Earth’s surface and stretched from 85° N to 90° S in a narrow belt. It was composed of two primary groupings:1
* Laurasia: The northern group of continents.1
* Gondwana: The southern group of continents.1

The remainder of the globe was occupied by Panthalassa, a vast world ocean that extended from pole to pole. Projecting westward between Gondwana and Laurasia was the Tethys Sea, a deep embayment of Panthalassa. While the Earth's crust was relatively quiescent at this time, the configuration of these landmasses would eventually change as continental rifting began later in the Triassic Period.123